I played the alpha, beta, and gamma, but I finally got a chance to play the PTE last night, and for the first time it felt like TA. Bravo, we're nearly there. One request: lobby chat room, or an official IRC channel. EDIT: Also, bots are great. Situational, yes, but I don't think they need to be changed.
No unit should be as situational as bots though, they are currently outclassed by tanks in almost every way...